Adobe Photoshop CC 2021 v22 was the first version to truly leverage GPU acceleration beyond canvas drawing.
Photoshop CC 2021 continued the migration toward a cloud-native architecture through the Cloud Documents system. adobe photoshop cc 2021 v22
One major concern was the shift away from legacy extensions. Adobe Photoshop CC 2021 v22 fully deprecated CEP (Common Extensibility Platform) in favor of UXP (Unified Extensibility Platform). Adobe Photoshop CC 2021 v22 was the first
What this means:
If you rely on a 2015-era plugin, do not upgrade to v22. If you rely on a 2015-era plugin, do not upgrade to v22
